module Avo::Concerns::Pagination

def apply_pagination(index_params:, query:, **args)
  extra_pagy_params = {}
  # Reset open filters when a user navigates to a new page
  if params[:keep_filters_panel_open] == "1"
    extra_pagy_params[:keep_filters_panel_open] = "0"
  end
  data_turbo_frame = "data-turbo-frame=\"#{CGI.escapeHTML(params[:turbo_frame]) if params[:turbo_frame]}\""
  # Perform pagination and fallback to first page on Pagy::RangeError.
  begin
    perform_pagination(index_params:, query:, data_turbo_frame:, extra_pagy_params:, **args)
  rescue Pagy::RangeError
    index_params[:page] = 1
    perform_pagination(index_params:, query:, data_turbo_frame:, extra_pagy_params:, **args)
  end
end

def pagination_hash
  @pagination ||= PAGINATION_DEFAULTS.merge(Avo.configuration.pagination).merge Avo::ExecutionContext.new(
    target: pagination,
    resource: self,
    view: @view
  ).handle
end

def pagination_type
  @pagination_type ||= ActiveSupport::StringInquirer.new(pagination_hash[:type].to_s)
end

def pagy_kind
  case pagination_type.to_sym
  when :countless
    :countless
  else
    :offset
  end
end

def pagy_querify(extra_pagy_params)
  return nil if extra_pagy_params.blank?
  lambda do |params_hash|
    params_hash.merge!(extra_pagy_params.transform_keys(&:to_s))
  end
end

def perform_pagination(index_params:, query:, data_turbo_frame:, extra_pagy_params:, **args)
  pagy(
    pagy_kind,
    query,
    **args,
    page: index_params[:page],
    limit: index_params[:per_page],
    anchor_string: data_turbo_frame,
    querify: pagy_querify(extra_pagy_params),
    slots: pagination_hash[:slots],
    raise_range_error: true
  )
end